Home / 724,672.70-1,087,009.05-644,956.55

Finding the Fourth Proportional to 724,672.70, 1,087,009.05 and 644,956.55

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Solution

The fourth proportional to 724,672.70, 1,087,009.05 and 644,956.55 is: 967,434.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,672.70 : 1,087,009.05 = 644,956.55 : x
  2. Step 2: Convert to fraction form
    724,672.70/1,087,009.05 = 644,956.55/x
  3. Step 3: Cross multiply
    724,672.70x = 1,087,009.05 × 644,956.55
  4. Step 4: Simplify right side
    724,672.70x = 701,073,606,706.78
  5. Step 5: Solve for x
    x = 701,073,606,706.78/724,672.70
  6. Step 6: Final answer
    x = 967,434.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.